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Sat, 05 Sep 2026 23:18:11 -0700 (PDT) From: Sumeet Pawnikar To: rafael@kernel.org, amit.kachhap@gmail.com, daniel.lezcano@kernel.org, thara.gopinath@gmail.com, talel@amazon.com, hayashi.kunihiko@socionext.com, mhiramat@kernel.org, mmayer@broadcom.com, viresh.kumar@linaro.org, sumitg@nvidia.com, krzk@kernel.org, peter.griffin@linaro.org, myungjoo.ham@samsung.com, kyungmin.park@samsung.com, cw00.choi@samsung.com, Frank.Li@nxp.com, s.hauer@pengutronix.de, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, sven@kernel.org, j@jannau.net, marcan@marcan.st, casey.connolly@linaro.org, sre@kernel.org, wens@kernel.org, t.schramm@manjaro.org Cc: bcm-kernel-feedback-list@broadcom.com, linux-samsung-soc@vger.kernel.org, kernel@pengutronix.de, imx@lists.linux.dev, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, sumeet4linux@gmail.com Subject: [PATCH 0/5] PM: Use %pe to print error pointers symbolically Date: Sun, 6 Sep 2026 11:47:49 +0530 Message-ID: <20260906061755.5103-1-sumeet4linux@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This patch series is a cleanup for subsystems under power management (linux-pm) that converts several instances of error pointer printing to use the `%pe` format specifier instead of explicitly casting with `PTR_ERR()`. Currently, many drivers use `PTR_ERR()` paired with `%ld` or `%li` to print error codes returned as pointers. By switching to `%pe` and passing the error pointer directly, the logging subsystem will automatically print the symbolic error name (e.g., `-ENOMEM`, `-EPROBE_DEFER`) when `CONFIG_SYMBOLIC_ERRNAME` is enabled, and gracefully fall back to the numeric value otherwise. This change significantly improves the readability of kernel logs and dmesg traces during debugging, without introducing any functional changes or side effects. The cleanup has been applied across the following PM subsystems/drivers: * powercap (intel_rapl_msr, intel_rapl_tpmi) * thermal (core, cpufreq_cooling, devfreq_cooling, mmio, etc.) * cpufreq (bmips, cppc, qoriq, s3c64xx) * devfreq (imx-bus, imx8m-ddrc, mtk-cci) * power/supply (various battery and charger drivers) Sumeet Pawnikar (5): powercap: intel_rapl: Use %pe to print error pointers symbolically thermal: Use %pe to print error pointers symbolically cpufreq: Use %pe to print error pointers symbolically devfreq: Use %pe to print error pointers symbolically power: Use %pe to print error pointers symbolically drivers/cpufreq/bmips-cpufreq.c | 4 ++-- drivers/cpufreq/cppc_cpufreq.c | 4 ++-- drivers/cpufreq/qoriq-cpufreq.c | 4 ++-- drivers/cpufreq/s3c64xx-cpufreq.c | 5 ++--- drivers/devfreq/imx-bus.c | 4 ++-- drivers/devfreq/imx8m-ddrc.c | 3 +-- drivers/devfreq/mtk-cci-devfreq.c | 4 ++-- drivers/power/reset/macsmc-reboot.c | 4 ++-- drivers/power/supply/axp20x_battery.c | 4 ++-- drivers/power/supply/cpcap-charger.c | 4 ++-- drivers/power/supply/cw2015_battery.c | 4 ++-- drivers/power/supply/intel_dc_ti_battery.c | 2 +- drivers/power/supply/qcom_smbx.c | 2 +- drivers/powercap/intel_rapl_msr.c | 4 ++-- drivers/powercap/intel_rapl_tpmi.c | 4 ++-- drivers/thermal/cpufreq_cooling.c | 4 ++-- drivers/thermal/devfreq_cooling.c | 4 ++-- drivers/thermal/qcom/qcom-spmi-adc-tm5.c | 4 ++-- drivers/thermal/thermal_mmio.c | 3 +-- drivers/thermal/uniphier_thermal.c | 3 +-- 20 files changed, 35 insertions(+), 39 deletions(-) -- 2.43.0